Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.55-3.735.00-5.30
1
7.18
👆🏻
Fracture
Conchoidal, Uneven
Uneven, ConchoidalWalter Schumann, Conchoidal
Cleavage
none
None, may show partings on {0001} and {10 1 1}
Mohs Hardness
7-7.56
2
10
👆🏻
Chemical Composition
Ca 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Fe 2O 3Arthur Thomas , Gemstones (2009)